TABLE 2.
Treatment outcomes.
| Treatment method | |||
|---|---|---|---|
| Variables | cEMR n = 107 | UEMR n = 96 | p‐value |
| Procedure time, min, mean ± SD | 3.9 ± 1.9 | 3.6 ± 2.2 | 0.1380 |
| En bloc resection (%) | 97 (91) | 90 (94) | 0.4138 |
| Horizontal margin (%) | 0.1940 | ||
| Negative | 60 (56) | 65 (68) | |
| Unclear | 42 (39) | 29 (30) | |
| Positive | 5 (5) | 2 (2) | |
| Vertical margin (%) | 0.9324 | ||
| Negative | 100 (93) | 90 (94) | |
| Unclear | 7 (7) | 6 (6) | |
| R0 resection (%) | 60 (56) | 65 (68) | 0.0889 |
| Adverse event (%) | |||
| Postoperative bleeding | 0 (0) | 1 (1) | 0.2899 |
| Intraoperative perforation | 0 (0) | 0 (0) | – |
| Delayed perforation | 0 (0) | 0 (0) | – |
Abbreviations: cEMR, conventional endoscopic mucosal resection; SD, standard deviation; UEMR, underwater endoscopic mucosal resection.